The Nahanni National Park Reserve, which is where the Nahanni River flows, is situated in the Northwest Territories, Canada. This region is characterized by:

* Ancient, crystalline bedrock that forms the Canadian Shield, resulting in thin, poorly developed soils.

* Cold, harsh climates with limited biological activity and slow decomposition rates.

* Prevalent podzol soils which are acidic and often contain a layer of organic matter (humus) on the surface.

* Forest vegetation adapted to these conditions, including coniferous trees like spruce and pine.

While the Nahanni region experiences a significant amount of rainfall, the soil's low permeability often leads to surface runoff and erosion.